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Old 02-03-2012, 08:44 PM   #5
savatreatabvr
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Join Date: Oct 2011
Location: phoenix, az
Posts: 508
Re: 454 Valve Steam Seals: Umbrella or Positive?

Got it, positives on (intakes) and umbrellas on (exhaust). Can they be reversed or can I use all umbrellas or all positives? Reason I'm asking is because my 454 isn't in a street rod it's in a old C20 work truck?

Quote:
Originally Posted by BigBlocksRule View Post
I run positive (viton) on intakes, umbrellas on exhaust since it needs a bit better lubrication.
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